#!/bin/bash
type cd

type ifconfig

type : # 扩展参数列表，执行重定向操作

type . # 读取并执行指定文件
type alias # 	为指定命令定义一个别名
type bg # 将作业以后台模式运行
type bind #	将键盘序列绑定到一个 readline 函数或宏

type break
type builtin
type caller
type cd
type command
type continue
type declare
type dirs
type disown
type echo
type enable
type eval
type exec
type exit
type fc
type fg
type hash
type help
type jobs
type kill
type let
type local
type logout
type mapfile
type popd
type printf
type pushd
type pwd
type read
type readarray
type readonly
type return
type set
type unset
type shift
type shopt
type source
type suspend
type test
type times
type trap
type type
type typeset
type ulimit
type umask
type unalias
type wait


